Question

Classify the following as elements or compounds with the help of a table. In case of compounds, write their constituent elements.


Hydrogen, silicon, plastic, carbon dioxide, uranium, polythene, aluminium, sodium, common salt, magnesium, sugar

Answer 1

Explanation:

Hydrogen --> element

silicon --> element

plastic--> compound

Plastics are the long chain synthetic polymers. These are compounds.

carbon dioxide--> compound

constituent element--> carbon and oxygen

uranium --> element

polythene --> compound

Polyethylene consists of hydrocarbon chains with the most basic component being the ethylene molecule, consisting of 2 carbon and 4 hydrogen atoms. When ethylene molecules are combined together in straight or branched chains, polyethylene is formed.

aluminium --> element

sodium --> element

common salt --> compound

constituent elements --> sodium and chlorine

magnesium--> element

sugar --> compound

constituent element --> carbon, hydrogen and oxygen

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